html,body{
    .box{
        width: 100px;
        height: 100px;
        /* background-color: blue; */
        background: url('../image/小粉猪.jpg');
        background-size: cover;
    }
    .box2{
        width: 100px;
        height: 100px;
        /* background-color: blue; */
        background: url('../image2/小粉猪.jpg');
        background-size: cover;
    }
}